RAF Typhoon jets have conducted a mission with French warplanes in a coordinated attack targeting an underground arms cache in Syria operated by the Daesh militant organization, per a report from the UK's MoD.
The facility, identified by intelligence, was assessed as containing munitions and bombs, the release indicated, and was positioned in hills just north of Palmyra in Syria's central region.
"The RAF jets utilized Paveway IV guided bombs to target a number of access tunnels down to the site... early reports indicate the strike was effective," the ministry announced.
There was no evidence of any harm to civilians in the operation late on Saturday and all the aircraft returned to base without incident, the defence officials confirmed.
The British jets were assisted by a Voyager tanker plane.
IS - referred to as Daesh - enforced militant control over parts of both Syria and Iraq prior to its 2019 collapse.
"This strike demonstrates British leadership, and determination to operate in unison with our allies, to eradicate any resurgence of IS and their dangerous and violent ideologies in the area," the British Defence Secretary John Healey said.
British military aircraft have conducted surveillance missions over Syria to "deter any efforts to regroup" of Islamic State following its routing at the Baghuz confrontation in 2019, the MoD reported.
"I must thank all the members of British forces involved in this operation for their expertise and their courage," Healey commented. "They were among numerous British personnel stationed over the festive period. This mission, to take out terrorist threats who threaten our way of life, demonstrates how our armed forces are always on standby, all year round, ensuring Britain's security domestically and strong abroad."
In December, the American forces conducted what it described as a "large-scale strike" on Daesh sites in Syria, subsequent to an assault killed two US troops and a local interpreter in the Palmyra area.
The UN reports IS still boasts between 5,000 and 7,000 fighters in Syria and Iraq.
